Automatic pitman-starter



(No Model.)

A. PAHRNEY. AUTOMATIC PITMAN STARTER- No. 462,811. Patented Nov.10,1891.

wuamiio v77? drewFa/firng: m Mmmaw UNITE o STATES PATENT OFFICE.

ANDREIV FAIIRNEY, OF MILLEDGEVILL I, ILLINOIS.

AUTOMATIC PlTMAN-STARTER.

SPECIFICATION forming part of Letters Patent No. 462,81 1, datedNovember 10, 1891.

Application filed Tune 30, 1891. Serial No. 398,034. (No model.)

To all whom it may concern:

Be it known that I, ANDREW FAHENEY, a citizen of the United States,residing at Milledgeville, in the county of Carroll and State ofIllinois, have invented a new and useful Automatic Pitrnan-Starter, ofwhich the following is a specification.

Myinventionhas reference toimprovements in devices for carrying theactuating end of a pitman or piston past the dead-points, which occurwhen the reciprocating movement of said pitman or piston is convertedinto a retary motion at its working end. This I accomplish by certaindevices "supplementary to the piston attached at one end to and actuatedby the inner portion thereof and attached at the other end to saidpiston at or near the operating end of the latter.

My invention is by obvious changes applicable to a variety ofconditions, and I will show and describe in this application one mode ofsuch adaptation illustrative of the application of the principle of myinvention.

In the drawings there is shown a perspective of a pitman or piston rodand a rotating wheel and the adjunctive devices attached theretoembodying my invention.

A is a plate representing the base of the machine and here used tosupport the several parts of my invention in their relative position.

Bis the inner end of a pit-man or piston rod, which, in case of apitinan, would be attached to an elbow or wrist crank, andin case of apistonn'od be provided with a head and adapted to reciprocate in acylinder, and in other situations may be attached to any reciprocatingbody.

C is the outer portion of said pitrnan or piston rod pivotally connectedto the part B by a pivot 1, rigidly seated in either of the parts B or Oand projected through and having a slight reciprocal action in slot 2,formed longitudinally through part B or C.

D is a rotating wheel, to which the outer end of the part 0 of saidpitnian is pivotally attached at In plate A is formed a longitudinalslot E, and short studs l a pass through the part B of said pitnian andrecip rocate in slot E merely as a means of exhibiting the reciprocalmovement of said pitman and its construction.

F is a post attached to an projected below the plate A, and which, inthe application of my invention, may be suitably fixed in any manner inthe relation here shown to the pitman, being substantially perpendicularto the movement of the part B of said pitman, and such post may be partof the base or frame of the machine.

G is an oscillating arm pivoted near its lower end at 5 to near thelower end of the post F. A series of holes can be formed in either thepost F or arm G, or both, for the optional seat of the pivot 5. To thearm G, near the upper end thereof, is pivotally attached at one end, at6, the toggle-arm II, projecting in the line of oscillation of the arm Gtoward the end B of the pitman and pivotally attached at its other endat 7 to a curved post .I, having a lower horizontal por tion and also avertical upper portion, and rigidly attached at the upper end of itsvertical portion at S to the end B of the pitman. The rod K is pivotallyconnected at one end, at 0 to the arm G, and extending outward in lineof the oscillation of the arm G is pivotally connected at 10 near itsopposite end to the lower end of a curved post L, rigidly seated on theouter end of the part C of said pitinan by bolt 12. The pivot 10 isseated in the slot 11, formed longitudinally in either the rod K or postL and rigidly seated in either said rod or said post.

The operation of my invention is as follows: \Vhen the pitinan C hasreached the limit of its outstroke,it will be at the dead-point in aline with the axis of wheel D and the part B of said pitnian. \Vhen saidpitman starts on its return stroke, the pivot 1 will be at the inner endof the slot 2 and the pivot 10 at the inner end of slot 11, and at theinitiative of the instroke said pivots will traverse said slots,respectively. This will cause the pivot 10 to pass to the outer end ofslot 9 dead-point, when the farther instroke of the pitman C will beaccomplished by the end B drawing upon the pivot 1. \Vhen the pivot end3 of the pitman C is at the dead-point in line between the axis of thewheel D and the end B of said pitman, the pivots l and 10 will be at theouter ends of the slots 2 and 11, respectively, and at the initiative ofthe out stroke of said pitman the pivots 10 and 1 will start toward theinner end of theirresp'ective slots, when the outward thrust of thepitman end B, through the medium of the post J, arm H, and rod K andpost L, will push the pivotpoint 3 upward past the dead-point lastaforesaid, when the farther outstroke of the part B Will be communicatedto the pivot 3 through the medium of the end 0 of said pitman. The slot1 is slightly longer than the slot 11, which causes the pivots 10 tomake the initiative action in each movement. The

arm H is shown pivoted to the arm G near,

the upper end of the latter. It can be pivoted lower on the arm G andnearer the pivotal point 5 of the latter, in which event the slot 2 maybe made shorter and nearly simply a pivot, and thereby preclude anynoticeable lost motion between the parts B and O of the pitman.Themovement of pin 10 in slot 11 is caused regularly by the oscillationof the lower end of the post Lconsequent upon the occillation of theouter end of pitman C and the rigid connection of postL thereto. Aconnection may be formed between'the postsJ and L which will beself-supporting, in which event the arm G may be dispensed with. It isevident, also, that the devices extending from the end B of the pitmanto the outer end of the part 0 thereof may with equal advantage beplaced above said pitman, the sole purpose being to form a lateral sideconnection between the portion of the pitman which has a straightreciprocal motion to the point of attachment to the wheel D. It isobvious that the attachment through theposts J and L and arms H and rodK permits the portion B of said pitman to exert a side draft on thedead-points of attachment of the arms 0 to the wheel or axle D,and thatis the objective point of my invention.

- of post L, substantially shown, and for the hat I claim as myinvention, and desire to secure by Letters Patent of the United States.is

1. The combination of the part B of a pitman or piston-rod, the post J,rigidly attached thereto at one end, the part C of said pitman or piston-rod, the post L, rigidly attached at one end thereto, arm H, androd K, pivotally connecting said posts, and the arm G, supporting thearm H, and rod K, substantially as shown, and for the purpose described.

2. The combination of the parts B and C of the piston-rod or pitmanpivotally connected, post J, rigidly attached at one end to part B, armG, post L, rigidly attached at one end to the outer end of the part 0,the arm H, pivotally attached at one end at the opposite end of post J,and the rod K, pivotally connecting the opposite end of arm H to thelower end purpose described.

3. The combination of the partsB and O of pitman or piston-rod havingslotted mutual connections, post J, rigidly attached at one end to partB and extending below thefsame, arm l-I, pivotally attached at one endto, the lower end of post J and pivotally supported at its opposite endupon the oscillating arm G, post L, rigidly attached at its upper end topart 0, rod K, pivotally attached at one end to arm G and having apivotal slotted connection to the lower end of post L,substa ntially asshown, and for the purpose described.

at. In combination with a pitman or pistonrod consisting of areciprocating portion B and the oscillating portion C, having a pivotalor hinged interconnection, a series of posts and toggle-arms locatedalongside of saidpitman and rigidly attached at or near the extremitiesof said series to said parts B and C, respectively, substantially'asshown, and for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

ANDREW FAHRNEY. Witnesses:

Jonn G. 1 \IANAHAN,- ADDA E. TARD.

